[roll] Roll fuchsia [fx] Cache functions whose values do not change

Cache the results of 'fx-rbe-enabled' and
'fx-build-needs-auth', so they can be called
freely without incurring excess overhead.
The uncached versions are prefixed with 'recheck-'.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1164960
Original-Revision: ac06a68ed5687824683100c96a0db9e9de99dd75
GitOrigin-RevId: 910a99c03d33756686de13d3dcb4d78c2c5a9b09
Change-Id: Ie1c5248a3f689442992364c91851652aaf3b30dd
diff --git a/stem b/stem
index 20f6e72..786c5e7 100644
--- a/stem
+++ b/stem
@@ -11,7 +11,7 @@
              githooks="integration/git-hooks"
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="59b6c014a7d00779a948e7917252bb2280625ecf"/>
+             revision="ac06a68ed5687824683100c96a0db9e9de99dd75"/>
   </projects>
   <hooks>
     <hook name="install-environment"